Improvement in harrows



y longitudinal bars.

UNITED STATES PATENT OFFICE.

u EDWARD F. PRYOR, OF DAYTON, OHIO.`

IMPROVEMENT IN HARROWS.

Specification forming part of Letters Patent No. 150,976, dated May 19,1874; application filed April 23, 1874.

To all whom it may concern:

j Be it known that I, EDWARD F. PRYOR, of Dayton, in the county ofMontgomery and State of Ohio, have invented certain new and usefulImprovements in the Construction of Harrows; and I do hereby declare thefollowing to be a full, clear, and exact` description of the invention,such as will ena-ble others skilled in the art to which it pertains tomake and use it, reference being had to the accom panyin g drawings,which form part of this specification.

The object of my invention is to introduce the use of angle-iron intothe construction of harrows. j

I am aware that fiat bar-iron and gas-pipe have been used heretofore inthe construction of barrow-frames; but in order to secure the requisitestii'ness to withstand the shocks to which a harrow at .times issubjected, a greater weight is attained than is desirable or necessaryto the successful use of the implement.

In order to obtain a stifstron g, and durable harrow, as well as onethat is light in proportion to its size, I have conceived the use ofangle-iron in the construction of the frame of the implement. Myimprovement consists in making the longitudinal bars (that the teeth areattached to) of angle-iron of small crossscction. In the verticalsection of these bars, and at a convenient distance from each end, I cutmortises. Through these mortises a bar of fiat iron of suitable sectionand length is passed. To these lateral `flat bars I rivet the Throughthe horizontal section of the angle-iron bar I cut a series of mortises,to receive the upper ends of the teeth. The teeth are attached to thevertical section of the bar by bolts or rivets. This method of fasteningthe teeth admits of renewing a broken tooth at will. To the outerlongitudinal bar on each side of the frame, and projecting verticallyupward therefrom, I attach, by bolts or rivets, an angle-iron arch. Thisarch is designed to give increased stift`` ness to the barrow-frame, andat the same time theyr act as convenient handles for lifting' eitherside or leaf of the implement over any obstruction that may be met within the use of the harrow.

In the annexed drawing, Figure l is an end elevation of a harrowembodying my improvements. Fig. 2 is a side view, and Fig. 3 is across-section on the dotted line in Fig. 2. y

The same letters of reference are used in the several figures in thedesignation of like parts.

The longitudinal angle-iron bars A A A, together with the lateral ilatbars O G, passing through the mortises a a, with rivets or bolts unitingthe bars A and O at the points of intersection, constitute the frameofthe hai-row. The lateral bars O O may be projected a convenientdistance from the sides of the frame, and hinged together, as shown atc. -The teeth d d d are thrust through mortises iu the horizontalsections of the bars A A A, and riveted or bolted to the side of thebar. The arch B, of angle-iron, is riveted or bolted to thc ends of theouter bars A.

Although I prefer a hinged or jointed har row, as shown, still I do notwish to confine myself to that style, as my improvements relate equallyto triangular, square, single, or sectional harrows.

That I claim as my invention, and desire to secure by Letters Patent, is

1. The frame of a harrow, constructed of angle-iron bars and flat bars,as shown and described.

2. The mortised longitudinal angle-iron bar A, with the harroW-teeth d dattached thereto, substantially as specilied.

3. The combination, in a harrow, of the longitudinal bars of angle-ironA, flat bars C, and arch B, substantially as shown and specified.

ED WARD F. PRYOR. I'Vitnesses:

JNO. H. HILL, C. HERCHELRODE.

